In a survey of 400 households regarding the ownership of VCRs and DVD players, the following data was obtained.
350 households own one or more VCRs.
170 households own one or more VCRs and one or more DVD players.
13 households do not own a VCR or a DVD player.
How many households only own one or more DVD players?
a. 16 households
b. 15 households
c. 21 households
d. 20 households
e. 30 households
f. 37 households
The question belongs to Mathematics and it is about finding the number of households who own only one or more DVD players.
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